Celebrate our nation's independence with friends and family as the entire community comes together for food, music and fireworks on Monday, July 4. Gaithersburg once again presents its Independence Day Celebration at the Montgomery County Fairgrounds. Gates open at 5 p.m. A lively two-hour concert featuring the popular variety band, Appaloosa, starts at 7 p.m., and a few brief remarks from the Gaithersburg Mayor and City Council will be made at 8 p.m. The exciting fireworks display launches at dusk (approximately 9:25 p.m.). In the event of rain, the fireworks only will be held on Tuesday, July 5.